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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Commodore 64 Standard 8K/16K cartridge emulation
**********************************************************************/
#include "emu.h"
#include "std.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(C64_STD, c64_standard_cartridge_device, "c64_standard", "C64 standard cartridge")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c64_standard_cartridge_device - constructor
//-------------------------------------------------
c64_standard_cartridge_device::c64_standard_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, C64_STD, tag, owner, clock),
device_c64_expansion_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c64_standard_cartridge_device::device_start()
{
}
//-------------------------------------------------
// c64_cd_r - cartridge data read
//-------------------------------------------------
uint8_t c64_standard_cartridge_device::c64_cd_r(address_space &space, offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
if (!roml && m_roml.bytes())
{
data = m_roml[offset & m_roml.mask()];
}
else if (!romh)
{
if (m_romh.bytes())
{
data = m_romh[offset & m_romh.mask()];
}
else if (m_roml.mask() == 0x3fff)
{
data = m_roml[offset & m_roml.mask()];
}
}
return data;
}
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